Fuel Management Study and Economic Analysis of Long-term Refueling for Qinshan-II NPP
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Abstract
The fuel management study on long-term refueling is presented for Qinshan-II NPP. The four units of Qinshan-II NPP adopt OUT-IN reloading pattern and annually refueling now, with 36 assemblies containing 3.7% enriched UO2 fuel. For 18-month long term refueling, 44 assemblies with 4.45% enriched fuel and IN-OUT reloading pattern will be used. However, the cycle length of designed long-term reloading pattern is not enough, as a result, the NPP utilization is reduced. A fuel management strategy, employing 48 assemblies with 4.45% enriched fuel and IN-OUT reloading pattern, is introduced. The economic analyses of the three fuel management strategies, including the income of electricity generation, expenditure of fuel assembly cost and effect of NPP Outage frequency, are investigated. Several advantages are deduced by compare analysis. So the introduced strategy is recommended for the Qinshan-II NPP 18-month long term refueling.
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